1/*M///////////////////////////////////////////////////////////////////////////////////////
2//
3//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
4//
5//  By downloading, copying, installing or using the software you agree to this license.
6//  If you do not agree to this license, do not download, install,
7//  copy or use the software.
8//
9//
10//                        Intel License Agreement
11//                For Open Source Computer Vision Library
12//
13// Copyright (C) 2000, Intel Corporation, all rights reserved.
14// Third party copyrights are property of their respective owners.
15//
16// Redistribution and use in source and binary forms, with or without modification,
17// are permitted provided that the following conditions are met:
18//
19//   * Redistribution's of source code must retain the above copyright notice,
20//     this list of conditions and the following disclaimer.
21//
22//   * Redistribution's in binary form must reproduce the above copyright notice,
23//     this list of conditions and the following disclaimer in the documentation
24//     and/or other materials provided with the distribution.
25//
26//   * The name of Intel Corporation may not be used to endorse or promote products
27//     derived from this software without specific prior written permission.
28//
29// This software is provided by the copyright holders and contributors "as is" and
30// any express or implied warranties, including, but not limited to, the implied
31// warranties of merchantability and fitness for a particular purpose are disclaimed.
32// In no event shall the Intel Corporation or contributors be liable for any direct,
33// indirect, incidental, special, exemplary, or consequential damages
34// (including, but not limited to, procurement of substitute goods or services;
35// loss of use, data, or profits; or business interruption) however caused
36// and on any theory of liability, whether in contract, strict liability,
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38// the use of this software, even if advised of the possibility of such damage.
39//
40//M*/
41
42#ifndef _UTILS_H_
43#define _UTILS_H_
44
45struct PaletteEntry
46{
47    unsigned char b, g, r, a;
48};
49
50#define WRITE_PIX( ptr, clr )       \
51    (((uchar*)(ptr))[0] = (clr).b,  \
52     ((uchar*)(ptr))[1] = (clr).g,  \
53     ((uchar*)(ptr))[2] = (clr).r)
54
55#define  descale(x,n)  (((x) + (1 << ((n)-1))) >> (n))
56#define  saturate(x)   (uchar)(((x) & ~255) == 0 ? (x) : ~((x)>>31))
57
58void icvCvt_BGR2Gray_16u_C3C1R( const ushort* bgr, int bgr_step,
59                                ushort* gray, int gray_step,
60                                CvSize size, int swap_rb=0 );
61void icvCvt_BGR2Gray_8u_C3C1R( const uchar* bgr, int bgr_step,
62                               uchar* gray, int gray_step,
63                               CvSize size, int swap_rb=0 );
64void icvCvt_BGRA2Gray_8u_C4C1R( const uchar* bgra, int bgra_step,
65                                uchar* gray, int gray_step,
66                                CvSize size, int swap_rb=0 );
67void icvCvt_Gray2BGR_8u_C1C3R( const uchar* gray, int gray_step,
68                               uchar* bgr, int bgr_step, CvSize size );
69void icvCvt_BGRA2BGR_8u_C4C3R( const uchar* bgra, int bgra_step,
70                               uchar* bgr, int bgr_step,
71                               CvSize size, int swap_rb=0 );
72void icvCvt_BGR2RGB_8u_C3R( const uchar* bgr, int bgr_step,
73                            uchar* rgb, int rgb_step, CvSize size );
74#define icvCvt_RGB2BGR_8u_C3R icvCvt_BGR2RGB_8u_C3R
75void icvCvt_BGR2RGB_16u_C3R( const ushort* bgr, int bgr_step,
76                             ushort* rgb, int rgb_step, CvSize size );
77#define icvCvt_RGB2BGR_16u_C3R icvCvt_BGR2RGB_16u_C3R
78
79void icvCvt_BGRA2RGBA_8u_C4R( const uchar* bgra, int bgra_step,
80                              uchar* rgba, int rgba_step, CvSize size );
81#define icvCvt_RGBA2BGRA_8u_C4R icvCvt_BGRA2RGBA_8u_C4R
82
83void icvCvt_BGR5552Gray_8u_C2C1R( const uchar* bgr555, int bgr555_step,
84                                  uchar* gray, int gray_step, CvSize size );
85void icvCvt_BGR5652Gray_8u_C2C1R( const uchar* bgr565, int bgr565_step,
86                                  uchar* gray, int gray_step, CvSize size );
87void icvCvt_BGR5552BGR_8u_C2C3R( const uchar* bgr555, int bgr555_step,
88                                 uchar* bgr, int bgr_step, CvSize size );
89void icvCvt_BGR5652BGR_8u_C2C3R( const uchar* bgr565, int bgr565_step,
90                                 uchar* bgr, int bgr_step, CvSize size );
91void icvCvt_CMYK2BGR_8u_C4C3R( const uchar* cmyk, int cmyk_step,
92                               uchar* bgr, int bgr_step, CvSize size );
93void icvCvt_CMYK2Gray_8u_C4C1R( const uchar* ycck, int ycck_step,
94                                uchar* gray, int gray_step, CvSize size );
95
96void  FillGrayPalette( PaletteEntry* palette, int bpp, bool negative = false );
97bool  IsColorPalette( PaletteEntry* palette, int bpp );
98void  CvtPaletteToGray( const PaletteEntry* palette, uchar* grayPalette, int entries );
99uchar* FillUniColor( uchar* data, uchar*& line_end, int step, int width3,
100                     int& y, int height, int count3, PaletteEntry clr );
101uchar* FillUniGray( uchar* data, uchar*& line_end, int step, int width3,
102                     int& y, int height, int count3, uchar clr );
103
104uchar* FillColorRow8( uchar* data, uchar* indices, int len, PaletteEntry* palette );
105uchar* FillGrayRow8( uchar* data, uchar* indices, int len, uchar* palette );
106uchar* FillColorRow4( uchar* data, uchar* indices, int len, PaletteEntry* palette );
107uchar* FillGrayRow4( uchar* data, uchar* indices, int len, uchar* palette );
108uchar* FillColorRow1( uchar* data, uchar* indices, int len, PaletteEntry* palette );
109uchar* FillGrayRow1( uchar* data, uchar* indices, int len, uchar* palette );
110
111CV_INLINE bool  isBigEndian( void )
112{
113    return (((const int*)"\0\x1\x2\x3\x4\x5\x6\x7")[0] & 255) != 0;
114}
115
116#endif/*_UTILS_H_*/
117